Henry berry



(N o Model.)

H. BERRY. CONSTRUCTION OF VALVES AND THEIR CONNECTIONS.

No. 537,103. Patented Apr. 9, 1895.

UNITED STATES P TENT QFEIQE.

HENRY BERRY, OF LEEDS, ENGLAND.

CONSTRUCTION OF VALVES AND THEIR CONNECTIONS.

SPECIFICATION forming part of Letters Patent No. 537,103, dated April 9, 1895. Application filed March 12. 1894. Serial No. 503,320. (No model.) Patented in England November 10, 1893. No. 21,416.

' To all whom it may concern} Be it known that I, HENRY BERRY, a subj ect of the Queen of Great Britain, residing at Leeds, in the county of York, England,have invented new and useful Improvements in the Construction of Working-Valves and their Connections Applicable to Water, Steam, Air, or Gas, (for which I have obtained a patent in Great Britain No. 21,416, hearing date November 10, 1893,) of which the following is a specification.

The object of this invention is to overcome the difficulty which has hitherto been experienced in the rapid and efficient opening and closing of working and other valves. According to my invention I employ, to attain this object, an auxiliary or working valve which communicates with a main pressure valve, and is so arranged, that by the opening or closing of the said auxiliary valve, the main pressure or outlet valve is similarly opened or closed.

Figures 1 and 2 are sectional elevations of a hydraulic single acting working valve constructed according to my invention. Fig. 3 is a plan view. Fig. 4 is a detail plan view of the shaft H showing the arrangement of the cams J, with the valves in section.

In carrying out my said invention I duplicate the valves, that is, in the one body A I have two main pressure valves B and B of which B is the exhaust, and two auxiliary valves (J and O, of which 0 is the exhaust. The said valves fit loosely in their chambers so as to admit of the passage of the compressed fluid as hereinafter explained. Apassage of communication 9 is formed between the two main pressure valves B B underneath the seat of the pressure or inlet valve B to the top of the seat of the exhaust or outlet valve B.

D and E are passages 'of communication from the pressure inlet F to the pressure out-,

let G and are regulated by the auxiliary valve C. Similar passages of communication are made between the main pressure exhaust valve B and auxiliary exhaust valve 0'.

The auxiliary valves 0 and O are actuated by means ofaI shaft H having cams J and a hand lever K fastened upon the said shaft H, and are so arranged as to be worked by the said lever K, the cams J, for each valve being so designed, that one valve is never open at the same time as the other, sufficient lap or clearance being left so that when the lever K, stands at the center of its stroke or movement, both of the said valves are closed. The cams J actuate alternately the said auxiliary Valves. i

L is the exhaust for allowing the fluid to escape from the machine, and M is the main pressure valve-box.

The action is as follows: The compressed fluid passes into the main pressure valve box M, through the pressure inlet F and a portion thereof forces itself between the main pressure valve B and the walls of the chamber in which such valve works, on to the top of the said main pressure valve B. The pressure accumulating on the top of the said valve B, forces it down on to its seating, and so closes it. To open the main pressure valve B, the auxiliary valve 0 is lifted by means of the hand lever K and cam shaft H, so exhausting the pressure or water from the top of the main pressure valve B and prevents, so long as it is kept open, any accumulation of water thereon. The main pressure valve B then rises and admits pressure to the machine. At the same time the outlet passage G is in communica tion with the valve box passage 'N'entering on the top side of the said valve seat. The same action which has been gone through with the valves B and O is followed out in the valves B and C. The pressure which is passing through accumulates on the top of the mainpressnre exhaust valve B and closes it. To open the said valve to exhaust, the cam shaft H is moved so-as to first close the auxiliary pressure valve, sufficient lap being allowed to allow both auxiliary valves to remain closed. The exhaust auxiliary valve B is then opened and water allowed to escape from the machine by the exhaust L, the main pressure valve B, in the meantime being closed.

What I claim is The combination, with the valve casing provided with valve chambers M and N; of the valves B and B in the respective chambers M and N; the valves 0 and O sliding in chambers behind the respective valves B and B, the valves B and B being connected to provided with an operating lever and cams J ro engaging the said valves C and O and operating to raise them alternately, substantially as set forth.

HENRY BERRY.

Witnesses:

JOHN E. \VALSH, WM. HY. REED. 

